发明名称 |
COMPOSITONS AND METHODS FOR CURING LOST CIRCULATION |
摘要 |
?Adding shapeable particles to drilling fluids may be useful for curing lost circulation. When the shapeable particles are pumped downhole through the drillpipe and the drillbit, they may deform when exposed to shear as they pass through the drillbit nozzles. While circulating back toward the surface they may relax at least partially and assume the shape of cracks or voids they encounter along the formation wall, thereby stopping losses. |
申请公布号 |
CA2944340(A1) |
申请公布日期 |
2015.10.08 |
申请号 |
CA20142944340 |
申请日期 |
2014.03.31 |
申请人 |
SCHLUMBERGER CANADA LIMITED |
发明人 |
MINIKH, OLGA ALEXANDROVNA;FU, DIANKUI;DAOU, FATMA;LUNGWITZ, BERNHARD |
分类号 |
C09K8/00;C09K8/035;E21B33/138 |
主分类号 |
C09K8/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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